John Power Knowles (June 13, 1808 – August 3, 1887) was a United States district judge of the United States District Court for the District of Rhode Island.

John Power Knowles
Born 1808 in Providence, RI
Died 1887 in Providence, RI
FJC ID: 1300
- Gender
- Male
- Race
- White
Prior employment
- Private practice, Providence, Rhode Island1838–1855, 1857–1865, 1867–1869
- Providence, Rhode IslandCity solicitor · 1866–1867
- Rhode IslandState representative · 1855, 1866
- Supreme Court of Rhode IslandCourt reporter · 1855–1857, 1865–1866
Appointments
1870–1881 · Appointed by Ulysses Grant (Republican)Term ended: Retirement
Education
LL.B. · 1838- Brown UniversityA.B. · 1836